Use of sensor redundancy to detect sensor failures

a technology of sensor redundancy and redundancy, applied in the field of use of sensor redundancy to detect sensor failures, can solve the problems of increased glucose concentration, inability to provide short-term or less-than-accurate blood glucose sensing, and complications of implantable glucose sensors

Active Publication Date: 2014-01-02
DEXCOM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]There is a need for more reliable devices, systems, and methods

Problems solved by technology

This condition typically leads to an increased concentration of glucose in the blood (hyperglycemia), which can cause an array of physiological derangements (such as, for example, kidney failure, skin ulcers, or bleeding into the vitreous of the eye) associated with the deterioration of small blood vessels.
Many conventional implantable glucose sensors suffer from complic

Method used

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  • Use of sensor redundancy to detect sensor failures
  • Use of sensor redundancy to detect sensor failures
  • Use of sensor redundancy to detect sensor failures

Examples

Experimental program
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Effect test

example 1

Two Sensors Having Different Interference Layers

[0229]Dual-electrode sensors (having a configuration similar to the embodiment shown in FIG. 1) can be constructed from two platinum wires. The first electrode had a first interference domain formed from a cellulosic derivative, and of a thickness of about 0.5 microns to block the flux of interferents. The second electrode was formed without an interference layer.

[0230]An experiment was conducted whereby various fluid samples were applied to the electrodes, and the signals from the two electrodes were compared. A processing module was used to detect elevated levels of interferents by comparing the signals from each sensor. Upon identification of high interferent levels, the processing module identified a sensor failure. Based on programmed settings, the processing module in communication with a receiver, provided information related to the sensor failure as expected.

[0231]Methods and devices that are suitable for use in conjunction wit...

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Abstract

Devices, systems, and methods for providing more accurate and reliable sensor data and for detecting sensor failures. Two or more electrodes can be used to generate data, and the data can be subsequently compared by a processing module. Alternatively, one sensor can be used, and the data processed by two parallel algorithms to provide redundancy. Sensor performance, including sensor failures, can be identified. The user or system can then respond appropriately to the information related to sensor performance or failure.

Description

INCORPORATION BY REFERENCE TO RELATED APPLICATIONS[0001]Any and all priority claims identified in the Application Data Sheet, or any correction thereto, are hereby incorporated by reference under 37 CFR 1.57. This application claims the benefit of U.S. Provisional Application No. 61 / 666,625, filed Jun. 29, 2012, U.S. Provisional Application No. 61 / 666,622, filed Jun. 29, 2012, and U.S. Provisional Application No. 61 / 666,618, filed Jun. 29, 2012, the disclosures of which are hereby expressly incorporated by reference in their entirety and are hereby expressly made a portion of this application.FIELD OF THE INVENTION[0002]The embodiments described herein relate generally to devices, systems, and methods for processing sensor data and for responding to changes in sensor function.BACKGROUND OF THE INVENTION[0003]Diabetes mellitus is a chronic disease, which occurs when the pancreas does not produce enough insulin (Type I), or when the body cannot effectively use the insulin it produces ...

Claims

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Application Information

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IPC IPC(8): A61B5/1495A61B5/145A61B5/00A61B5/1473A61B5/1459
CPCA61B5/1495A61B5/1473A61B5/1459A61B5/7278A61B5/14532A61B5/7246A61B5/7221A61B5/14865A61B2562/04
Inventor PEYSER, THOMAS A.BHAVARAJU, NARESH C.BOWMAN, LEIF N.KAMATH, APURV ULLASMAHALINGAM, AARTHIPRYOR, JACKSIMPSON, PETER C.
Owner DEXCOM
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